Quality-Based Content Delivery over the Internet

Cover......Page 1
Quality-Based Content\rDelivery over the Internet......Page 4
ISBN 9783642191459......Page 5
Preface......Page 6
Table of Contents......Page 8
1.1 Background......Page 12
1.3 Research Topics......Page 14
1.4 Focus of This Book......Page 15
1.5 Book Outline......Page 16
2.1 New Challenges to Web Content Delivery......Page 18
2.2 Overview of Active Network......Page 19
2.3 Basic Technologies in Active Network......Page 21
2.3.1 Basic Proxy Caching......Page 22
2.3.2 Transcoding for Pervasive Internet Access......Page 23
2.3.3.1 Data Format......Page 25
2.3.3.2 Markup Language......Page 27
2.3.3.3 System Frameworks......Page 29
2.3.3.4 Web Protocols......Page 32
2.4.1 IBM\'s Transcoding Proxy......Page 34
2.4.3 Rice\'s Puppeteer......Page 35
2.5.1 Compression Proxy......Page 36
2.5.4 Blocking and Filtering......Page 37
2.6 Analysis of Existing Adaptive Content Delivery Frameworks and Systems......Page 38
References......Page 39
3.1 Introduction......Page 48
3.2 Basic Latency Dependence Model......Page 50
3.3 Web Page Retrieval Latency......Page 54
3.4.1 Experimental Environment......Page 58
3.4.2 Web Page Latency Breakdown......Page 59
3.4.3 Object Retrieval Parallelism......Page 61
3.4.4 Definition Time and its Rescheduling......Page 64
3.5 Discussion about Validity of Observed Results Under Different Environments......Page 66
References......Page 67
4.1 Introduction......Page 70
4.2 Pre-requistes for Rescheduling of Embedded Object Retrieval......Page 71
4.3.1 Object Declaration Mechanism (OD)......Page 74
4.3.2 History-Based Page Structure Table Mechanism (PST)......Page 77
4.3.3 Analysis of Object Declaration and History-Based PST Mechanisms......Page 80
4.4 Experimental Study......Page 81
4.4.1 Potentials of Push-Forward and Parallelism Effect in Web Page Retrieval......Page 83
4.4.2 Effect of Object Declaration Mechanism......Page 85
4.4.3 Effect of History-Based Page Structure Table (PST) Mechanism......Page 88
4.4.4 Effect of Integrated OD and PST Mechanism......Page 90
References......Page 93
5.1 Introduction......Page 96
5.2 Basic Web Content Transformation Model......Page 99
5.3 Modes of Content Transformation on Streaming Web Data......Page 101
5.3.1 Byte-Streaming Transformation Mode......Page 102
5.3.2 Whole-File Buffering Transformation Mode......Page 103
5.3.3 Chunk-Streaming Transformation Mode......Page 104
5.4 Discussion of the Impact of Transformation Mode on Web Page Latency......Page 105
5.5 Experimental Study......Page 107
5.5.1 Regrouping and Push-Backward Effects on Object Perceived Time......Page 108
5.5.2 Regrouping and Push-Backward Effects on Page Retrieval Time......Page 109
5.5.3 Regrouping and Push-Backward Effects in the Presence of Proxy Cache......Page 110
References......Page 112
6.1 Introduction......Page 114
6.2.1 DataFlow Path of Proxy Cache......Page 115
6.2.2.1 Phase 1: Request Processing......Page 117
6.2.2.2 Phase 2: Reply Processing......Page 118
6.3 Four-Stage AXform Framework......Page 119
6.3.1.1 Input Data Availability and Output......Page 120
6.3.1.4 Case Study: Client IP-Based Redirection......Page 121
6.3.2 Stage 2 ofAXform Framework: Server Request Stage......Page 122
6.3.2.3 Appropriateness of Content Transformation......Page 123
6.3.2.4 Case Study: URL Based Access Control......Page 124
6.3.3.2 Caching Issue......Page 125
6.3.3.4 Case Study: Real-Time Streaming Compression......Page 126
6.3.4.3 Appropriateness of Content Transformation......Page 128
6.3.4.4 Case Study: Local Advertisement Uploading Based on Client’s DNS/IP......Page 129
6.3.5 Summary......Page 130
6.4.1.1 Global and Local Space, Permanent and Temporary Space......Page 131
6.4.1.2 Temp File......Page 132
6.4.1.3 Garbage Collection......Page 133
6.4.3 Client Information Collection......Page 134
6.4.3.3 Client Preference......Page 135
6.4.4.1 Server ID......Page 136
6.4.5.2 System Resource Usage......Page 137
6.4.7.1 Content Length......Page 138
6.4.8.1 Buffer Overflow......Page 139
6.4.9.2 Cache Hit/Miss Module......Page 140
Reference......Page 141
7.1.1 Performance Model......Page 142
7.1.2 Improving the Delivery by Reducing the Object Dependence......Page 143
7.1.4 System Framework and Requirements......Page 144
7.2.2 Unified Data Format......Page 145
7.2.4 Protocol Design......Page 146
Index......Page 148